<!-- 聊天列表 -->
<template>
  <div class="msglist">
    <ul>
      <li
        v-for="item in searchedChatlist"
        :key="item.id"
        class="sessionlist"
        :class="{ active: item.id === selectId }"
        @click="selectSession(item.id)"
      >
        <div class="list-left">
          <img
            class="avatar"
            width="42"
            height="42"
            :alt="item.user.name"
            :src="item.user.img"
          >
        </div>
        <div class="list-right">
          <p class="name">{{item.user.name}}</p>
          <span class="time">{{item.messages[item.messages.length-1].date | time}}</span>
          <p class="lastmsg">{{item.messages[item.messages.length-1].content}}</p>
        </div>
      </li>
    </ul>
  </div>
</template>

<script>
import { mapState, mapActions, mapGetters } from 'vuex'
export default {
  computed: {
    ...mapState([
      'selectId',
      'searchText'
    ]),
    ...mapGetters([
      'searchedChatlist'
    ])
  },
  methods: {
    ...mapActions([
      'selectSession',
    ])
  },
  filters: {
    // 将日期过滤为 hour:minutes
    time (date) {
      if (typeof date === 'string') {
        date = new Date(date);
      }
      if (date.getMinutes() < 10) {
        return date.getHours() + ':0' + date.getMinutes();
      } else {
        return date.getHours() + ':' + date.getMinutes();
      }
    }
  },
}
</script>

<style lang="stylus" scoped>
.msglist {
  height: 540px;
  overflow-y: auto;

  .sessionlist {
    display: flex;
    padding: 12px;
    transition: background-color 0.1s;
    font-size: 0;

    &:hover {
      background-color: rgb(220, 220, 220);
    }

    &.active {
      background-color: #c4c4c4;
    }

    .avatar {
      border-radius: 2px;
      margin-right: 12px;
    }

    .list-right {
      position: relative;
      flex: 1;
      margin-top: 4px;
    }

    .name {
      display: inline-block;
      vertical-align: top;
      font-size: 14px;
    }

    .time {
      float: right;
      color: #999;
      font-size: 10px;
      vertical-align: top;
    }

    .lastmsg {
      position: absolute;
      font-size: 12px;
      width: 130px;
      height: 15px;
      line-height: 15px;
      color: #999;
      bottom: 4px;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
    }
  }
}
</style>
